BCDEdit Tweaks

A comprehensive toolkit for optimizing Windows boot configuration through carefully selected BCDEdit tweaks. This repository provides scripts to enhance system performance and compatibility with full transparency about each modification.

🚨 Important Disclaimer

Modifying boot configuration settings can significantly impact your system's behavior and may introduce security vulnerabilities. Systems with these tweaks applied should exercise extra caution regarding:

• Websites visited
• Files downloaded
• Links clicked

Only apply these tweaks if you fully understand their implications. If uncertain, please consult with IT professionals or experienced community members before proceeding. All modifications are applied at your own risk.

🛡️ Safe Options Available

Not an advanced user? You can still benefit from our zero security risk options by using the Safe Tweaks option in the script. These safe tweaks provide performance benefits without compromising system security.

Safe Parameters:

• bcdedit /set disabledynamictick yes
• bcdedit /set useplatformtick yes
• bcdedit /set tscsyncpolicy enhanced
• bcdedit /set uselegacyapicmode no
• bcdedit /set usephysicaldestination no
• bcdedit /set hypervisorlaunchtype off (Note: Only use if you don't need virtual machines)

📋 Script Overview

This repository includes a comprehensive BCDEditTweaks.cmd script that combines all functionality into a single, easy-to-use tool.

The script provides three main options:

1. Apply All BCDEdit Tweaks (Performance + Compatibility)
2. Apply Safe BCDEdit Tweaks (Zero Security Risk)
3. Reset All Settings to Default

🚀 How to Use

1. Download the BCDEditTweaks.cmd script from this repository
2. Right-click the file and select "Run as administrator"
3. Choose from the available options:
   • [1] Apply All BCDEdit Tweaks - Full set of optimizations (includes advanced tweaks)
   • [2] Apply Safe BCDEdit Tweaks - Security-focused subset of tweaks
   • [3] Reset All Settings to Default - Return to original configuration
   • [4] Exit - Close the program
4. Important: Restart your system after script execution for changes to take effect

🔄 Reverting Changes

If you need to return to default settings, the script includes a "Reset All Settings to Default" option that:

• Removes all applied tweaks
• Restores the nx parameter to its default OptIn value
• Returns your system to its original boot configuration

🔧 Complete Tweaks Reference

Each tweak has been labeled with a safety rating to help you understand potential impacts:

Safe Tweaks:

• bcdedit /set disabledynamictick yes [✅ SAFE]
  Disables dynamic tick feature for more consistent task handling. May increase power consumption but improves performance consistency.

• bcdedit /set useplatformtick yes [✅ SAFE]
  Forces use of the platform clock for more accurate timing resolution. Enhances input responsiveness and reduces input delay.

• bcdedit /set tscsyncpolicy enhanced [✅ SAFE]
  Improves Time Stamp Counter synchronization for better multi-core task coordination.

• bcdedit /set uselegacyapicmode no [✅ SAFE]
  Disables legacy interrupt controller mode for more efficient interrupt handling.

• bcdedit /set usephysicaldestination no [✅ SAFE]
  Optimizes processor core ID handling for systems with multiple logical processors.

• bcdedit /set hypervisorlaunchtype off [✅ SAFE]
  Disables hypervisor when not using virtual machines, freeing up system resources.

Advanced Tweaks (Potential Security Implications):

• bcdedit /set usefirmwarepcisettings no
  Bypasses firmware PCI Express settings to avoid potential compatibility issues.

• bcdedit /set tpmbootentropy ForceDisable
  Disables TPM-provided entropy during early boot for faster startup times.

• bcdedit /set bootux Disabled
  Removes graphical boot experience to accelerate system startup.

• bcdedit /set loadoptions DDISABLE_INTEGRITY_CHECKS and bcdedit /set nointegritychecks Yes
  Disables driver signature enforcement. Allows unsigned drivers but introduces security risks.

• bcdedit /set testsigning No
  Disables test signing mode. Helpful for compatibility with certain anti-cheat systems.

• bcdedit /set nx AlwaysOff
  Disables Data Execution Prevention. May improve performance with older software but reduces protection against certain attacks.

💡 Use Cases

These tweaks can be particularly beneficial for:

• Performance Enhancement: Improving system responsiveness for resource-intensive applications and gaming
• Legacy Software Support: Resolving compatibility issues with older applications
• Input Latency Reduction: Minimizing delays in input processing for competitive gaming
• Boot Time Optimization: Accelerating system startup process
• System Resource Management: Allocating resources more efficiently for specific workloads